Table 4

OR of a diagnosis of idiopathic pulmonary fibrosis based on CT scan pattern in male patients (compared with female patients)

OR (95% CI)P value
2011 guidelines
 Definite UIP0.99 (0.74 to 1.33)0.94
 Possible UIP1.86 (1.62 to 2.14)<0.001
 Inconsistent with UIP5.40 (4.51 to 6.47)<0.001
2018 guidelines
 Definite UIP0.99 (0.73 to 1.33)0.94
 Probable UIP1.74 (1.52 to 2.01)<0.001
 Indeterminate4.83 (3.54 to 6.59)<0.001
 Other diagnosis of ILD25.58 (17.80 to 36.77)<0.001
  • *Analysis adjusted for age, smoking history, autoantibody status and exposures.

  • ILD, interstitial lung disease; UIP, usual interstitial pneumonia.